西门子SIPLACE HS 50-设备参数_EN.pdf - 第19页

17 Description The component bar code scanner enables a speedy, reliable set-up and component replenishment verification. To this end the bar codes of the t racks (on the track scale on the feeder table) and the componen…

Description

Some local safety requirements

dictate that all feeder locations

must be equipped with feeders.

If the feeder set-up does not fill all

feeder locations, guards may be

used in place of the modules.

SAFETY

WARNING

Component Supply:

Guard for Feeder Locations

Various Guards for Feeder Locations

The following guard-variants can be used:

1 SIPLACE guard for 1 location

2 SIPLACE guard for 6 - 10 locations

3 SIPLACE guard for 11 - 20 locations

Description

The component bar code scanner

enables a speedy, reliable set-up

and component replenishment

verification. To this end the bar

codes of the tracks (on the track

scale on the feeder table) and the

components allocated to them (bar

code labels on tapes, Bulk Cases,

etc.) are read in with a hand scan-

ner. An audible and optical signal

acknowledges a successful reading

operation. If a label is damaged,

the bar code can also be entered

at the keyboard.

The allocation of the components

to their respective track is de-

scribed in the set-up data. If the

data received from the bar code

scanner does not correspond with

the set-up data, an error message

is displayed.

If the set-up check is switched on,

it becomes a mandatory step in

the set-up process. If it is switched

off, the set-up check is optional.

Component Supply:

Component Bar Code Scanner for Set-Up and Refill Check

(Option)

Component

Control

Set-Up File

Track

Bar Code

Scanner

Technical Data

Connection Station computer

Data entry Bar code scanner or keyboard

Number of characters Max. 40

Restrictions Bar codes beginning with number 1, 2, 3

or 4 and with less than 5 characters

Number of bar codes Max. 6 per component

Number of filters to blank out

data Max. 1 per bar code

Preset types of codes Code 39 (standard or full ASCII),

Code 2 from 5 interleaved and normal,

Code 128, UPC/EAN/JAN codes

(more upon request)

The scanner checks the corresponding track and the components.

Component

Bar Code

Description

The SIPLACE HS-50 has a number

of vision modules and a central vi-

sion system to evaluate the re-

corded image data ensuring high

placement accuracy.

At the machine´s X-gantry the PCB

vision module is mounted. It is

used to find the PCBs´ positioning-

offsets within the conveyor sys-

tem.

This vision module is also required

to measure the machine origin

and/or the feeder positions on one

side of the table. It consists of a

single CCD camera with integrated

lighting and optics.

The offsets in the position of the

PCBs are determined with the help

of at least two but generally three

reference fiducial marks on the

PCB. When the PCB arrives at the

placement area the positioning

system with its PCB vision module

moves to the programmed mark

position.

Using the Geometrical Alignment

allows to choose predefined marks

from a menu (e.g. cross, circle,

square). The size of the mark is

programmed at the Station Com-

puter. From this time on form and

size of the mark is defined and

known.

With this data the PCB vision

module is able to search and rec-

ognize the mark at the predefined

position on the PCB or ceramic

substrate without further assis-

tance. For this reason it places

several small evaluation windows

at the assumed border of the

mark. Within these evaluation win-

dows the vision system looks for

contrast transitions between bright

and dark. After finding such con-

trasts the actual position of the

mark can be assigned by compari-

sion with the predefined – and

thus known – form and size.

Evaluation operations calculate

possible PCB offsets against given

values of X-, Y- and Theta-axis.

Saving the mark by teaching is not

necessary any more.

Additional functions of the PCB

vision module are recognition of

the position of the feeders and

ceramic substrate (optional) and

recording of the machine data in-

cluding mapping.

In addition, the bad board recogni-

tion unit handles “ink spots” with

the aid of the PCB vision module.

Vision Sensor Technology:

PCB Vision Module

Technical Data

Reference marks

Local marks

Library memory

Recognition of bad boards

up to 3 (subpanels and multiple panels)

up to 2 per component

(may be of different type)

up to 255 types of reference marks

per subpanel

Image analysis Correlation principle (geometric

alignment) based on gray-scale values

Lighting method Front lighting

Recognition time fiducial/

bad board marks

0.4 s

Camera’s field of view 5.7 x 5.7 mm

a) Software 502.xx required.

Geometrical Alignment

Camera’s field of view

Pixel

Ink Spot e.g. Square

Evaluation window